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public static void getSysProp(){
Properties props = System.getProperties();
Set<Entry<Object,Object>> res = props.entrySet();
Iterator it = res.iterator();
while (it.hasNext())
{
Map.Entry e = (Map.Entry)it.next();
......
/*ÄÚ²¿ÀàʹÓÃʾÀý*/
package demo;
class Outer{
int outer_i=100;
static int outer_j=200;
final int outer_k=300;
void test(){
Inner in = new Inner();
in.display();
}
static class Inner{
void display(){
  ......
package demo;
class TA{
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// public static final int m=9;
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public static int m=9;
static {
System.out.println("In Static m=" ......